JPH0539705A - Intake/exhaust valve for internal combustion engine - Google Patents
Intake/exhaust valve for internal combustion engineInfo
- Publication number
- JPH0539705A JPH0539705A JP21650491A JP21650491A JPH0539705A JP H0539705 A JPH0539705 A JP H0539705A JP 21650491 A JP21650491 A JP 21650491A JP 21650491 A JP21650491 A JP 21650491A JP H0539705 A JPH0539705 A JP H0539705A
- Authority
- JP
- Japan
- Prior art keywords
- stem
- intake
- combustion engine
- internal combustion
- exhaust valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、摺動案内部を備えるス
テムに、ガスをシールするための傘部を連設してなる内
燃機関用吸排気弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intake / exhaust valve for an internal combustion engine in which a stem provided with a sliding guide portion is connected to an umbrella portion for sealing gas.
【０００２】[0002]
【従来の技術】内燃機関用吸排気弁は、高速で往復運動
させられるが、この運動は、カムによって設定された通
り、正しく行わなければならない。そのためには、吸排
気弁は軽量であることが必要である。2. Description of the Related Art An intake / exhaust valve for an internal combustion engine is reciprocated at high speed, and this movement must be performed correctly as set by a cam. For that purpose, the intake / exhaust valve needs to be lightweight.
【０００３】また、吸排気弁の重量が大であると、その
作動に要する力も大となるとともに、慣性並びにカム等
に対する負荷も大となり、内燃機関の機械的損失は大き
くなる。Further, if the intake / exhaust valve is heavy, the force required for its operation will be large, and the inertia and the load on the cam and the like will be large, and the mechanical loss of the internal combustion engine will be large.
【０００４】一方、高速度で往復運動するステムの摺動
案内部の耐摩耗性は大でなければならないことは言うま
でもない。On the other hand, it goes without saying that the sliding guide portion of the stem that reciprocates at a high speed must have high wear resistance.
【０００５】このような要求に応えるために、傘部およ
びステムからなる弁体を、チタン、チタン合金、アルミ
ニウム合金、またはそれらの複合体で製作し、そのステ
ムにおける摺動案内部に、耐摩耗性に富む材料を溶射も
しくはめっき等することにより、軽量化と耐摩耗性の向
上とを計るようにした試みが、すでに行われている(特
開昭61-81505号公報、特開平1-96407号公報参照)。In order to meet such demands, a valve body comprising an umbrella portion and a stem is made of titanium, a titanium alloy, an aluminum alloy, or a composite body thereof, and a sliding guide portion of the stem has a wear resistance. Attempts have been made to reduce the weight and improve the wear resistance by thermal spraying or plating a material having excellent properties (JP-A-61-81505, JP-A-1-96407). (See Japanese Patent Publication).
【０００６】[0006]
【発明が解決しようとする課題】上述のように、予め製
作した弁体の要所に、表層材として、他の金属を溶射し
たりめっきしたりするには、特別の設備が必要であると
ともに、その加工に時間と手間がかかり、しかも、これ
らの材料は一般に高価であるため、製品の価格は大とな
る。また、チタン材等への溶射又はめっきは難しく、剥
離を生じ易い。As described above, special equipment is required in order to spray or plate other metal as a surface material on the essential parts of the valve body manufactured in advance. However, it takes a lot of time and labor to process it, and since these materials are generally expensive, the price of the product becomes large. Further, thermal spraying or plating on a titanium material or the like is difficult and peeling easily occurs.
【０００７】[0007]
【課題を解決するための手段】本発明は、簡単な設備又
は工具を用いてステムの耐摩耗性を高めることを目的と
するもので、ステムの一端に傘部が一体的に形成された
弁体における前記ステムに、前記弁体とは別に成形され
たほぼ円筒形で、かつ耐摩耗性を有する覆筒を嵌合固定
することにより上記問題点は解決される。DISCLOSURE OF THE INVENTION The present invention is intended to enhance wear resistance of a stem by using a simple equipment or tool, and a valve having an umbrella portion integrally formed at one end of the stem. The above problem can be solved by fitting and fixing to the stem of the body a cover cylinder which is formed separately from the valve body and which is substantially cylindrical and has wear resistance.
【０００８】[0008]
【作用】弁体の主要部を軽量な材料で構成してあるにも
拘らず、そのステムの摺動案内部の耐摩耗性は大であ
り、しかも、弁体とは別の覆筒を嵌着するのみであるた
め容易に実施することができる。FUNCTION Although the main part of the valve body is made of a lightweight material, the sliding guide part of the stem has high wear resistance, and a cover cylinder different from the valve body is fitted. Since it is only worn, it can be easily implemented.
【０００９】[0009]
【実施例】以下、図面に基いて、本発明の実施例を説明
する。なお、各図において、前部である傘部側を下方と
してある。Embodiments of the present invention will be described below with reference to the drawings. In addition, in each figure, the umbrella portion side, which is the front portion, is located downward.
【００１０】図１は、本発明の第１実施例を示す。傘部
(１)と一体をなすステム(２)は、チタン、チタン合金、
アルミニウム合金またはそれらの複合体でできている。FIG. 1 shows a first embodiment of the present invention. Umbrella part
The stem (2) integrated with (1) is made of titanium, titanium alloy,
Made of aluminum alloys or their composites.
【００１１】ステム(２)には、その摺動案内部を含む領
域のやや前方に設けた内向段部(３)を介して、その後端
に至るまで、一定の径の小径部(４)が形成され、かつこ
の小径部(４)における摺動案内部を含む領域のやや後方
には、環溝(５)が設けられている。The stem (2) is provided with a small diameter portion (4) having a constant diameter up to its rear end via an inward step portion (3) provided slightly forward of the region including the sliding guide portion. An annular groove (5) is formed in the small diameter portion (4) slightly rearward of the region including the sliding guide portion.
【００１２】前記小径部(４)には、硬化された鋼、合金
鋼、セラミックス、耐摩耗性プラスチック等、もしくは
これらの複合あるいは重層材料等の耐摩耗性材料からな
り、かつ所要の外径と長さを有する覆筒(６)が適正に嵌
合されている。The small-diameter portion (4) is made of hardened steel, alloy steel, ceramics, wear-resistant plastic or the like, or a wear-resistant material such as a composite material or a multi-layer material thereof, and has a required outer diameter. The cover tube (6) having a length is properly fitted.
【００１３】覆筒(６)の前端は、前記内向段部(３)に当
接し、かつ同じく後端は、環溝(５)の直前に位置すると
ともに、環溝(５)に嵌合した止めリング(７)により、受
支されて、その移動を阻止されている。The front end of the cover tube (6) is in contact with the inward stepped portion (3), and the rear end of the cover tube (6) is located immediately before the ring groove (5) and is fitted in the ring groove (5). It is supported by the stop ring (7) and is prevented from moving.
【００１４】図２は、本発明の第２実施例を示す。第２
実施例では、傘部(11)と一体をなすステム(12)に、第1
実施例における内向段部(３)に代えて、ほぼ同じ位置
に、凹入曲率の大きな係合溝(13)を設け、かつ第１実施
例のものとほぼ同じ位置にある後方の環溝(14)も、凹入
曲率の大きなものとし、係合溝(13)と環溝(14)との間
を、小径部(15)としてある。FIG. 2 shows a second embodiment of the present invention. Second
In the embodiment, the stem (12) integrated with the umbrella portion (11) has a first
Instead of the inward step (3) in the embodiment, an engaging groove (13) having a large concave curvature is provided at substantially the same position, and a rear annular groove (at the same position as in the first embodiment) is provided. 14) also has a large concave curvature, and a small diameter portion (15) is provided between the engagement groove (13) and the ring groove (14).
【００１５】小径部(15)には、第１実施例におけると同
様の材料からなる覆筒(16)を適正に嵌合し、その前後端
部をかしめて内向湾曲させることにより、それぞれ係合
溝(13)と環溝(14)に、きつく係止してある。A cover cylinder (16) made of the same material as in the first embodiment is properly fitted to the small-diameter portion (15), and the front and rear ends thereof are caulked and inwardly curved to be engaged with each other. It is tightly locked in the groove (13) and the ring groove (14).
【００１６】図３は、本発明の第３実施例を示す。第３
実施例では、傘部(21)と一体をなすステム(22)の要部
を、後端に至るまで小径部(23)とし、その部分の要所
に、前述と同様の材料よりなる所要寸法の覆筒(24)を、
冷し嵌めあるいは焼嵌めにより固着してある。FIG. 3 shows a third embodiment of the present invention. Third
In the embodiment, the main part of the stem (22) that is integral with the umbrella part (21) is a small diameter part (23) up to the rear end, and the required dimensions of the same material as described above are provided at the important parts of the part. The cover (24) of
It is fixed by cold fitting or shrink fitting.
【００１７】図４は、本発明の第４実施例を示す。第４
実施例では、前述と同様の材料よりなる所要寸法の覆筒
(25)の上端部を、ステム(22)の上端部に形成されたコッ
タ溝(26)を利用してかしめることにより、固定したもの
である。このようにすると、コッタ溝(26)の耐摩耗性を
も向上することができる。FIG. 4 shows a fourth embodiment of the present invention. Fourth
In the embodiment, a cover tube made of the same material as that described above and having a required size.
The upper end of (25) is fixed by caulking by utilizing the cotter groove (26) formed in the upper end of the stem (22). By doing so, the wear resistance of the cotter groove (26) can also be improved.
【００１８】[0018]
(a) 主要部を軽量の材料をもって構成することにより、
軽量化を計ることができる。 (b) 往復摺動部の耐摩耗性は大であり、長期使用に耐え
ることができる。 (c) 簡単な設備もしくは工具で、簡単に実施することが
できる。 (d) 高価な耐摩耗性材料の使用を最小限に押えることが
できる。(a) By constructing the main part with a lightweight material,
The weight can be reduced. (b) The abrasion resistance of the reciprocating sliding part is great, and it can withstand long-term use. (c) It can be carried out easily with simple equipment or tools. (d) Minimize the use of expensive wear-resistant materials.
【図１】本発明の第１実施例を示す一部切欠正面図であ
る。FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention.
【図２】同じく第２実施例を示す一部切欠正面図であ
る。FIG. 2 is a partially cutaway front view of the same second embodiment.
【図３】同じく第３実施例を示す一部切欠正面図であ
る。FIG. 3 is a partially cutaway front view of the same third embodiment.
【図４】同じく第４実施例を示す一部切欠正面図であ
る。FIG. 4 is a partially cutaway front view showing a fourth embodiment of the same.
(１)傘部 (２)ステム (３)内向段部 (４)小径部 (５)環溝 (６)覆筒 (７)止めリング (11)傘部 (12)ステム (13)係合溝 (14)環溝 (15)小径部 (16)覆筒 (21)傘部 (22)ステム (23)小径部 (24)(25)覆筒 (26)コッタ溝 (1) Umbrella part (2) Stem (3) Inward step part (4) Small diameter part (5) Ring groove (6) Cover tube (7) Stop ring (11) Umbrella part (12) Stem (13) Engagement groove (14) Annular groove (15) Small diameter part (16) Cover cylinder (21) Umbrella part (22) Stem (23) Small diameter part (24) (25) Cover cylinder (26) Cotter groove
Claims (6)
た弁体における前記ステムに、前記弁体とは別に成形さ
れたほぼ円筒形で、かつ耐摩耗性を有する覆筒を嵌合固
定したことを特徴とする内燃機関用吸排気弁。1. A substantially cylindrical and wear-resistant cover cylinder formed separately from the valve body is fitted to the stem of a valve body having an umbrella portion integrally formed at one end of the stem. An intake / exhaust valve for an internal combustion engine, which is fixed.
定してなる請求項１記載の内燃機関用吸排気弁。2. The intake / exhaust valve for an internal combustion engine according to claim 1, wherein the cover cylinder is fixed to the stem with a stop ring.
なる請求項１記載の内燃機関用吸排気弁。3. The intake / exhaust valve for an internal combustion engine according to claim 1, wherein the cover cylinder is fixed to the stem by caulking.
てなる請求項１記載の内燃機関用吸排気弁。4. The intake / exhaust valve for an internal combustion engine according to claim 1, wherein the cover cylinder is fixed to the stem by cold fitting.
なる請求項１記載の内燃機関用吸排気弁。5. The intake / exhaust valve for an internal combustion engine according to claim 1, wherein the cover cylinder is fixed to the stem by shrink fitting.
タ溝にかしめにより固定されている請求項１記載の内燃
機関用吸排気弁。6. The intake / exhaust valve for an internal combustion engine according to claim 1, wherein the cover cylinder is fixed to a cotter groove formed at the end of the stem by caulking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21650491A JP2791963B2 (en) | 1991-08-02 | 1991-08-02 | Intake and exhaust valves for internal combustion engines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21650491A JP2791963B2 (en) | 1991-08-02 | 1991-08-02 | Intake and exhaust valves for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0539705A true JPH0539705A (en) | 1993-02-19 |
| JP2791963B2 JP2791963B2 (en) | 1998-08-27 |
Family
ID=16689467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21650491A Expired - Fee Related JP2791963B2 (en) | 1991-08-02 | 1991-08-02 | Intake and exhaust valves for internal combustion engines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2791963B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005348767A (en) * | 2004-06-08 | 2005-12-22 | Yamato Protec Co | Pressure accumulation type fire extinguisher |
| JP2015098871A (en) * | 2013-11-19 | 2015-05-28 | マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテルハフツングＭＡＨＬＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ | Valve for valve device, method of manufacturing the same, and internal combustion engine comprising the same |
-
1991
- 1991-08-02 JP JP21650491A patent/JP2791963B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005348767A (en) * | 2004-06-08 | 2005-12-22 | Yamato Protec Co | Pressure accumulation type fire extinguisher |
| JP4714430B2 (en) * | 2004-06-08 | 2011-06-29 | ヤマトプロテック株式会社 | Accumulated fire extinguisher |
| JP2015098871A (en) * | 2013-11-19 | 2015-05-28 | マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテルハフツングＭＡＨＬＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ | Valve for valve device, method of manufacturing the same, and internal combustion engine comprising the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2791963B2 (en) | 1998-08-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |